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A DSSC structure with complementary absorption characteristics, showing the possibility of wideband absorption compared with a conventional single-sensitizer DSSC.
(a) Photocurrent-voltage characteristics for the multidyed DSSC (solid circle) and single dyed DSSC (open square). All the samples were measured under the AM -one sunlight intensity and (b) IPCE spectra as a function of wavelength for the multidyed DSSC structure with both A and B dyes (solid circle) along with the single dyed DSSC with only dye A (open square) and dye B (dashed line). (c) UV-visible spectra of ethanolic solution of TA-St-CA (dye A) and N-719 (dye B) used for the A and B layers, respectively.
(a) A DSSC structure having a bare A layer ( thickness) without dye and a -thick B layer with N-719 dye, (b) their photocurrent-voltage characteristics at AM -1 sunlight intensity, (c) absolute IPCE, and (d) photocurrent and voltage plot with respect to bare A layer thickness.
Photocurrent transient for the cell used in Fig. 3 with different pump laser intensity (square: without pump laser, circle: , up triangle: , down triangle: ). The photocurrent density of was generated by the bias light. The inset shows the photocurrent transient behavior in the time domain within .
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